Hair-cutting tool



Fehfzs., 1924. I Lam.

w. sOvlTzKY ET AL HAIR CTTING TOOL Filed Feb.4 9. 1923 /5 H7.1 e L10 lil ull ' Wamel Envltzk-g Charleslluhan.

Patented Feb. 26, i924.

HAIR-CUTTING TOOL.

Application. ined February e, 192s. ,serial nacimos.

To all 'whom t may concern.'

Be it known that we, WALTER Sovrrzirr and CHARLES DURAN, both citizens of the United States, and residents of Milwaukee and Kenosha, respectively, in thecounties of Milwaukee and Kenosha, respectively, and State of Wisconsin, have invented certain new and useful Improvements in Hair-Cutting Tools; and we do hereby declare that the following is a full, clear, and exact description thereof.

Heretofore it has been the practice in hair cutting for the barber to lift the hair with a comb, or in his fingers, measuring its length and severing it with shears in the other hand. This operation involves inconveniences and expenditure of considerable time.

It is the primary object of applicants invention to provide an instrument embodying the functional features of the comb and shears in one unitary structure. The device simulates, in some respect, the appearances of a comb-has coarse teeth on one side and fine on the other, the fine teeth being in sequence of greater length. Cutting knives are provided and power is transmitted thereto from a flexible shaft. The comb knives are used to lift and measure the hair and the cutting blades are reciprocated automatically, thus severing the hair. The operation is accomplished in a minimum of time, the device may be retained in one hand, is conveniently operated, saves labor and is automatic.

An object of the invention is the provision of a structure to which operating power may be transmitted from a flexible shaft. The instrument comprises two primary cutting devices and the manner of aihxation of the exible shaft is such that the shaft may be transferred from one of the cutting dcvices to the other without stopping the rotation of the shaft. This makes for speed and convenience in operation.

An object of the invention is the provision of a construction, Vwhich is exceedingly simple, easy to manufacture and durable. A pair of mating bearing blocks are provided, in which the shafts are journaled, the con struction being very simple and adapted to withstand long usage.

Vith the above and other objects in view, which will appear as the description proceeds, the invention resides in the novel construction, combination and arrangement of parts substantially-` as hereinafterv described and more particularly defined bythe appended claims, it being understood thatzsuch changes in the precise, embodiment Vof the herein disclosed invention may be madelas come within the scopeof the claims.

In the .accompanying drawings is illusi trated one complete example oftliephysical embodiment ofthe present invention constructed according to the best modeV so 'fardevised for the practical applicationfofthe principles thereof.

Figure 1 is a rear end elevationof the. de-V vice with a flexible tubedisconnected.

Figure 2 is a longitudinal, horizontal, sectional view.

Figures 3 and 4 aresections on. the lines 3 3 and 4-4 ofl Figure 1 respectively.

Figure 5 is a detail-showing the manner of ailixation of the flexible tube and :drive shaft to the crank shaft.

On one end of the device is: a comb Iknife 10, having a series ofcoarse teeth lltherealong. On the other end of the `device isa comb knife 12, having a plurality vof relatively fine teeth 13, Vwhich increase contin-V against comb knife 12. Comb knives 10 and 12 are connected integrally to eachother by a flat, thin plate 15. f Cutting lbladef 14 is provided with a slot 16 and a pin 17 extending across the slot. A lower and an upper casing are provided, the lower having a flat portion 18 and the upper having a flat portion 19 secured to plate 15 by means of bolt 20.

Connecting rod 21 is secured at one end to pin 17 and is reciprocable in a slot 22 in blade 15. The lower casing is provided with a rib 20 extending to and integral with a semi-cylindrical member 24. The upper casing is provided'with a similar rib 25 extending to and integral with semi-cylindrical member 26. The provision of slot 22 in blade 15 results in the formation of an elongated, rectangular finger 27, through which a bolt 28 is directed, securing the upper and the lower casings thereto. The two mating semi-cylindrical members 24 and 26 form a cylinder, in which is positioned a pair of mating bearing blocks 29 and 29. The hearing blocks are journaled to receive the crank shafts 30 and 3l, the former being operatively connected to connecting rod 2l Vfor reciprocating cutter blade 14.

On the rotation of crank shaft 30 the cutting blade 14 is reciprocated. The comb knife may then be moved to a desired cutting position, the teeth serving to lift the hair in the manner of the comb as ordinarly employed by the barber. The fact that the teeth 13 are of increasing length, facilitates the adjustment of the instrument in such Wise as to cut the hair relatively longer or shorter, as desired. A second cutter blade 32 is provided, co-operating with comb knife l0 and disposed on the lower side thereof, as viewed in Figure i. A connecting rod 33 extends from the end thereof to crank shaft 8l. The teeth il of comb knife 10 are relatively coarse, so that this portion of the mechanism is adapted primarily to substitute for the coa-rser teeth of the comb. In assembling the parts, the upper and lower casings are secured together by means of bolts 20 and 28, already described, and bolts 34-35 and 36. Bearing blocks 29---29V are then i'itted about crank shafts' 30 and 3l and a pin 37 is inserted through registering apertures in the blocks for securing them together. Each of the blocks is provided with a lateral, projecting pin 38 and when the blocks are inserted into the cylindrical opening in the casings, the pins 38 are moved into openings in the casings, the shafts 30 and 31 being suitably rotated to facilitate the insertion of their ends into the openings in connecting rods 2l and-33, Crank shafts 30 and 3l are provided With collars 39 and 40 operative to take up thrust. The pins 37 and 38, lock the bearing blocks rigidly together and secure them rigidly to the casings, so that there is no rattling nor looseness of parts. Crank shaft 31 lis provided With a longitudinal keyway 4l, adapted to receive a key 42 on the flexible shaft 43 in a. fieXible tube 44. The iexible tube is provided at its end With a. cylindrical coupling 45 which is provided With a plurality of minor slots at itsl end, Where it is bowed annuiarly at 46. The coupling is adapted to be inserted into an opening in cap 47, Which is threaded on to the casings. The annular deformation of the coupling co-operates with a shoulder 48 provided adjacent each of the openings, of which there are two, in cap 47. The coupling may be removed from one opening and positioned in the other without necessitating the stopping of flexible shaft 43. Cap 47 is provided interiorly With a boss 47 contacting With blocks 29, 29 at their meeting line and maintaining them snugly in position.

TWe claim:

In a hair cutting machine, the combination of spaced sets of stationary teeth, said teeth acting as a comb for guiding the hair towards the rear portions, one set of teeth being relatively coarse and the other set of teeth being relatively tine, saidfine set of teeth being arranged in an order of decreasing length, a reciprocatory cutter bar for each set of teeth, said cutter bars each having a series of relatively short cutting teeth cooperating With the iirst mentioned series of teeth, a pair of cranks revolubly mounted intermediate the tivo series of stationary teeth, links connecting said cranks with the respective cutter bars and detachable driving means for selective operative coupling with either of said cranks.

In testimony that We claim the foregoing We have hereunto set our hands at li/.iilivaukee, in the county of Milwaukee, State of Wisconsin, and at Kenosha, in the county of Kenosha and State of Tfilisconsin, respectively.

WALTER SUVITZKY. CHARLES DUBN. 

